"American Horror Story" will dip into its magical, murderous past for its next offering.

Co-creator Ryan Murphy tweeted Thursday that Season 8 of the FX horror anthology, due in the fall, will be a crossover event featuring characters from two earlier outings, Season 1's "Murder House" and Season 3's "Coven."

"The Coven/Murder House AHS crossover season won't be happening next year...because it's happening THIS YEAR. AHS #8," tweeted Murphy, who previously told Entertainment Weekly of the crossover plan, but not when it would occur.

The Coven/Murder House AHS crossover season won't be happening next year...because it's happening THIS YEAR. AHS #8 WITCHES RULE THIS SEPTEMBER

The remainder of his tweet indicated it will be a good year for those who cast spells: "WITCHES RULE THIS SEPTEMBER."

Of course, characters, actors and plots remain to be announced.

"Murder House," which focused on a haunted, homicidal home in Los Angeles, featured Dylan McDermott and Connie Britton. Stars of "Coven," which followed a group of witches in New Orleans, include Kathy Bates and Angela Bassett.

‘American Horror Story’ Season 1 Episode 4: “Halloween Part 2.” While most TV Halloween episodes are fun opportunities to see your favorite sitcom characters in costume, they are serious business on ‘AHS.’ The Season 1 episode is genuinely terrifying between its hauntings and horrific deaths.(Photo: Robert Zuckerman, FX Network)